CC5 remove unused imports

Author: djatnieks

test/unit/org/apache/cassandra/repair/messages/RepairMessageTest.java

@@ -34,10 +34,8 @@
 import org.apache.cassandra.net.MessageDelivery;
 import org.apache.cassandra.net.RequestCallback;
 import org.apache.cassandra.net.Verb;
-import org.apache.cassandra.nodes.Nodes;
 import org.apache.cassandra.repair.SharedContext;
 import org.apache.cassandra.utils.Backoff;
-import org.apache.cassandra.utils.CassandraVersion;
 import org.apache.cassandra.utils.FBUtilities;
 import org.apache.cassandra.utils.TimeUUID;
 import org.assertj.core.api.Assertions;